China Ningbo Wellite Eletronic Co.,Ltd. is a leading professional manufacturer of PIR(Passive Infra-Red) sensor switch in China. Our products, doorbell, doorbells are widely being used in automatic light control, promoting convenience, safety and cost-saveing. We employed Total Quality Management and established an ISO9001:2000 quality management system.With the belief that goods products and good service will lead us to the success. We have established our markets in Europe, North America, and Australia. Wellite not only sells our existing products, doorbell, doorbells, but also provides complete developping solution for our customer. We are always strengthening our own R&D team and paying many efforts on more new designs.